我有一个使用自定义光标适配器填充 ListView 的 ListView。
这row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:orientation="vertical"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="fill_parent">
<TextView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:gravity="center_vertical"
android:ellipsize="marquee"
android:textSize="24dp" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/artist"
android:singleLine="true"
android:ellipsize="marquee"
android:textSize="14dp" />
</LinearLayout>
<ImageView
android:id="@+id/currentplaying"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginLeft="1dip"
android:src="@android:drawable/ic_media_play"
android:contentDescription="@string/now_playing"
android:visibility="gone" />
</LinearLayout>
如您所见,ImageView 的可见性消失了。我想让它对某一特定行可见。这是我尝试过的代码,但它不起作用......
View view = getListView().getAdapter().getView(0, null, null);
ImageView iv = (ImageView)view.findViewById(R.id.currentplaying);
iv.setVisibility(ImageView.VISIBLE);
提前致谢。
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.yourlayout, null);
holder.imgViewLogo = (ImageView) convertView.findViewById(R.id.imgViewLogo);
convertView.setTag(holder);
}
else {
holder=(ViewHolder)convertView.getTag();
}
if(position==0) {
holder.imgViewLogo.setVisiblity(View.VISIBLE);
}
return convertView;
}
编辑:
我让它工作了。我用它来启动 ListView 活动。
intent.putExtra("id", c.getInt(c.getColumnIndex(DatabaseHelper._ID)));
startActivity(intent);
在 ListView 活动中,
currentplayingid = getIntent().getExtras().getInt("id");
然后我添加了这个bindview()
ImageView imgview = (ImageView)view.findViewById(R.id.currentplaying);
int id = c.getInt(c.getColumnIndex(DatabaseHelper._ID));
if (id == SongsListActivity.this.currentplayingid)
imgview.setVisibility(View.VISIBLE);
else
imgview.setVisibility(View.GONE);